<html>
<head>
    <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
    <title>io_context::make_service</title>
    <link rel="stylesheet" href="../../../boostbook.css" type="text/css">
    <meta name="generator" content="DocBook XSL Stylesheets V1.75.2">
    <link rel="home" href="../../../index.html" title="Asio">
    <link rel="up" href="../io_context.html" title="io_context">
    <link rel="prev" href="io_context/overload2.html" title="io_context::io_context (2 of 2 overloads)">
    <link rel="next" href="notify_fork.html" title="io_context::notify_fork">
</head>
<body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF">
<table cellpadding="2" width="100%">
    <tr>
        <td valign="top"><img alt="asio C++ library" width="250" height="60" src="../../../asio.png"></td>
    </tr>
</table>
<hr>
<div class="spirit-nav">
    <a accesskey="p" href="io_context/overload2.html"><img src="../../../prev.png" alt="Prev"></a><a accesskey="u"
                                                                                                     href="../io_context.html"><img
        src="../../../up.png" alt="Up"></a><a accesskey="h" href="../../../index.html"><img src="../../../home.png"
                                                                                            alt="Home"></a><a
        accesskey="n" href="notify_fork.html"><img src="../../../next.png" alt="Next"></a>
</div>
<div class="section">
    <div class="titlepage">
        <div>
            <div><h4 class="title">
                <a name="asio.reference.io_context.make_service"></a><a class="link" href="make_service.html"
                                                                        title="io_context::make_service">io_context::make_service</a>
            </h4></div>
        </div>
    </div>
    <p>
        <span class="emphasis"><em>Inherited from execution_context.</em></span>
    </p>
    <p>
        <a class="indexterm" name="asio.indexterm.io_context.make_service"></a>
        Creates a service
        object and adds it to the <a class="link" href="../execution_context.html" title="execution_context"><code
            class="computeroutput"><span class="identifier">execution_context</span></code></a>.
    </p>
    <pre class="programlisting"><span class="keyword">template</span><span class="special">&lt;</span>
    <span class="keyword">typename</span> <a class="link" href="../Service.html"
                                             title="Service requirements">Service</a><span class="special">,</span>
    <span class="keyword">typename</span><span class="special">...</span> <span class="identifier">Args</span><span
                class="special">&gt;</span>
<span class="keyword">friend</span> <span class="identifier">Service</span> <span class="special">&amp;</span> <span
                class="identifier">make_service</span><span class="special">(</span>
    <span class="identifier">execution_context</span> <span class="special">&amp;</span> <span
                class="identifier">e</span><span class="special">,</span>
    <span class="identifier">Args</span> <span class="special">&amp;&amp;...</span> <span class="identifier">args</span><span
                class="special">);</span>
</pre>
    <p>
        This function is used to add a service to the <a class="link" href="../execution_context.html"
                                                         title="execution_context"><code class="computeroutput"><span
            class="identifier">execution_context</span></code></a>.
    </p>
    <h6>
        <a name="asio.reference.io_context.make_service.h0"></a>
        <span><a name="asio.reference.io_context.make_service.parameters"></a></span><a class="link"
                                                                                        href="make_service.html#asio.reference.io_context.make_service.parameters">Parameters</a>
    </h6>
    <div class="variablelist">
        <p class="title"><b></b></p>
        <dl>
            <dt><span class="term">e</span></dt>
            <dd><p>
                The <a class="link" href="../execution_context.html" title="execution_context"><code
                    class="computeroutput"><span class="identifier">execution_context</span></code></a> object
                that owns the service.
            </p></dd>
            <dt><span class="term">args</span></dt>
            <dd><p>
                Zero or more arguments to be passed to the service constructor.
            </p></dd>
        </dl>
    </div>
    <h6>
        <a name="asio.reference.io_context.make_service.h1"></a>
        <span><a name="asio.reference.io_context.make_service.exceptions"></a></span><a class="link"
                                                                                        href="make_service.html#asio.reference.io_context.make_service.exceptions">Exceptions</a>
    </h6>
    <div class="variablelist">
        <p class="title"><b></b></p>
        <dl>
            <dt><span class="term">asio::service_already_exists</span></dt>
            <dd><p>
                Thrown if a service of the given type is already present in the
                <a class="link" href="../execution_context.html" title="execution_context"><code class="computeroutput"><span
                        class="identifier">execution_context</span></code></a>.
            </p></dd>
        </dl>
    </div>
    <h6>
        <a name="asio.reference.io_context.make_service.h2"></a>
        <span><a name="asio.reference.io_context.make_service.requirements"></a></span><a class="link"
                                                                                          href="make_service.html#asio.reference.io_context.make_service.requirements">Requirements</a>
    </h6>
    <p>
        <span class="emphasis"><em>Header: </em></span><code class="literal">asio/io_context.hpp</code>
    </p>
    <p>
        <span class="emphasis"><em>Convenience header: </em></span><code class="literal">asio.hpp</code>
    </p>
</div>
<table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%">
    <tr>
        <td align="left"></td>
        <td align="right">
            <div class="copyright-footer">Copyright © 2003-2022 Christopher M. Kohlhoff<p>
                Distributed under the Boost Software License, Version 1.0. (See accompanying
                file LICENSE_1_0.txt or copy at <a href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>)
            </p>
            </div>
        </td>
    </tr>
</table>
<hr>
<div class="spirit-nav">
    <a accesskey="p" href="io_context/overload2.html"><img src="../../../prev.png" alt="Prev"></a><a accesskey="u"
                                                                                                     href="../io_context.html"><img
        src="../../../up.png" alt="Up"></a><a accesskey="h" href="../../../index.html"><img src="../../../home.png"
                                                                                            alt="Home"></a><a
        accesskey="n" href="notify_fork.html"><img src="../../../next.png" alt="Next"></a>
</div>
</body>
</html>
